var s = 'hello'
var n = new Number(123)
var f = true
var u = undefined
var o = null
var sy = Symbol()
var b = 1234656n
console.log(typeof s) // 5
console.log(typeof n) // 123
console.log(typeof f) // true
console.log(typeof u) // undefined
console.log(typeof o) // object
console.log(typeof sy) // symbol
console.log(typeof b) // bigint
